Action Comics goes All In! Superstar writers Mark Waid and Mariko Tamaki team-up to bring a sweeping Superman epic that stretches from the past to the future and beyond, and it all starts here with a brand new story arc perfect for anyone looking for a way to jump into the rich world of the Man of Steel!Superman, back in time! In the past on his home planet Krypton, Superman is left to uncover some uncomfortable truths relating to the Phantom Zone and his own family ? or, more specifically, his father, Jor-El! But what will those truths mean for him in the present day? And just how many unexpected allies and enemies can he unearth along the way?